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ISS Power and RF Interfaces Discrepancy: A Challenge for Equipment Movement

The interfaces in the Russian and US segments of the ISS differ in power and RF requirements, complicating easy transfer of ham equipment. Understanding the varied power sources, connectors, and data package needs is crucial for seamless operations.

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ISS Power and RF Interfaces Discrepancy: A Challenge for Equipment Movement

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  1. ISS Ham common Interfaces

  2. The problem The interfaces in the Russian and US segment are different for both Power and RF and probably other ways. The requirements for safety data packages are also different and usually do not cover all of the ISS. For this reason we are not able to easily move ham equipment from one module to the other as needed.

  3. Power • The Russian modules use 28vDC as their standard power source. • The US Segment uses 120VDC as its standard power source

  4. Power connectors FGB Power panel Service module Power panel

  5. Packet Module power cable 28VDC Russian to U.S. Power cable ends Russian to U.S. Power cable

  6. Packet Module Power in 28VDC and data

  7. 12VDC input tp Ericsson Radio

  8. Russian 13.6VDC power

  9. KUPS 28VDC connector

  10. KUPs Power outlet

  11. Proposed ARISS Power pinout

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